Jacob joseph louis smits



J. J. L. SMITS.

SCREEN.

APPLICATION FILED MAR. 26. 1915.

1,1 9%,5. Patented Aug. 8, 1916.

2 SHEETS-SHEET I.

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SCREEN.

APPLICATION FILED MAR. 26. 1915.

1,194,250. Patented Aug. 8, 1916.

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' To all whom it may concern:

.mcon .rosnrn LOUIS exams, or Urancnr, nn'rnnnnanns.

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' SCREEN.

Application filed March 26, 1915. Serial No. 17,267.

Be it lmown that I, JACOB JOSEPH LOUIS SMrrs, a subject of the Queen of the Netherlands, residing at 3 Willem de Zwygerstraat, Utrecht, Netherlands, have invented certain new and useful Improvements in Screens;

" and I do hereby declare the following to be a full, clear, and exact description of the invention.

My invention relates to screens and par ticularly endless traveling screens, the object of my invention being to provlde an ,efiicient device of this character in which the endless screen comprises a plurality of screen sections mounted on an endless cham, belt or like carrier and travellng over rollers, drums or the like. Such a screen may be used to advantage for purifying water used in engines, condensing plants, etc.

According to my invention the screen may be traveled without interrupting the flow of liquid therethrough, andthe working portion of the screen lifted out of the liquid into position to be cleansed while a fresh portion of. the screen simultaneously moves into working position. If the screen is thus traveled continuously or intermittently at suitable intervals, the mesh of the screen may, without danger of clogging, be made much finer than is possible where a stationary screen is used, which must remain in position for several days, since the portion of the screen which is out of the liquid is cleansed and returns, with its meshes untion of the latter. Again, the apparatus is more efficient since the fine mesh of the screen sections effects a much more complete removal of impurities from the water or other liquid in which the screen operates. In the accompanying drawlngs Figure 1 is aside elevation of my novel screen with parts in section and Fig. 2 is an end elevation, and Fig. 3 an altered construction; Fig. 4 is a detail view.

a denotes gridor screen-elements mounted on endless chains or belts b which travel over rollers c, d, c. Q

f denotes the part of the screen situated between the rollers 0 and (Z and which is operative.

9 denotes the stream of cooling-Water to be purified; h denotes the duct leading this water to the screen and through this screen into the well 2'.

7c denotes grooves on the roller 0 in which the axles Z of the endless chain 1) or little rollers fastened on these axles are caught in order to cause the traveling of the screen when this roller 0 is rotated by a handle, a motoror by any other suitable means.

m denotes the inoperative part of the screen between the rollers c and e; n denotes a trough beneath this part m 0 denotes water Jets and p scrapers for removing the impurlties from the screen, while g denotes sludge pipes for the impurities. These impurltles are washed off the screen part m by the water ets 0 and scraped off by the scrapers 10; they fall down into the trough n and flow away by the sludge pipes q.

On the way between the rollers e and 0 any defective screen-element a can be easily removed and replaced, while the part f o the screen remains operative.

On the way between the rollers e-d, and dc the screen-elements are guided by latm1 guides 1'. For this purpose little rollers 8 may be arranged on the axles Z. of the endless chain which rollers work in the guides 0".

When the screen is in constant motion its operative elements continuously change, a. e. fresh and cleansed elements constantly move vertically through the stream of water 9 and take the place of others which are already loaded with impurities; in this way a very effective purification of the water is obtained.

In the construction according to Fig. 3 of the drawings the guiding rollers 01' and e are removed and replaced by guide-parts t.

I claim as my invention:

1. An endless traveling screen partially submerged, guide means for maintaining the submerged reaches of the screen in V- shape, and the unsubmerged reach between the upper ends of the submerged reaches in substantially horizontal position above the latter, in combination with means acting on the said horizontal reach of the screen to cleanse the latter before resubmersion.

2. An endless traveling screen, partially submerged, marginal guides therefor arranged at an angle to each other and at least partially submerged to maintain the submerged portion of the screen in V-shape, a portion of the screen not submerged having a substantially horizontal travel and means merged and the third side unsubmerged and substantially horizontal, for the purposes specified.

4. An endless traveling screen partially submerged, comprising an endless carrier element, divergent guides engaging-the same 111 the submerged area of the screen and guide means to support said carrier element;

between the divergent guides.

In testim0ny \yhereof I have signed my name to this specification, in the: presence of two subscribing Witnesses.

JACOB JOSEPH LOUIS SMITS.

Witnesses HENRY HASPER, WOLDEMAR HAUPT. 

